Dryocosmus kuriphilus pdf merge

Cab international workshop on building biosecurity planning and surveillance capacity for apec member economies kuala lumpur, malaysia 15. Classical biological control against the chestnut gall wasp dryocosmus kuriphilus hymenoptera, cynipidae in france. In june 2015 the first finding of dryocosmus kuriphilus oriental chestnut gall wasp in the uk was confirmed, in a kent woodland. Pdf classical biological control against the chestnut. Dryocosmus kuriphilus is considered as one of the major. Occurrence of oriental chestnut gall wasp dryocosmus kuriphilus.

Dryocosmus kuriphilus is a species of gall wasp known by the common names chestnut gall wasp, oriental chestnut gall wasp, and asian chestnut gall wasp. Une fois vos fichiers pdf charges dans notre systeme, vous pouvez en changer l ordre. Pdf rearing, release and settlement prospect in italy of torymus. The use of torymus sinensis against dryocosmus kuriphilus. No significant relationships between the number of emerged t. General information about dryocosmus kuriphilus drycku eppo global database. Abstract background the asian chestnut gall wasp acgw dryocosmus kuriphilus yasumatsu is the most severe pest of the genus. Fusionner pdf combiner en ligne vos fichiers pdf gratuitement. Pdf biological control of invasive dryocosmus kuriphilus. Torymus sinensis against the chestnut gall wasp dryocosmus.

Establishment and long distance spread to non release sites. Dryocosmus kuriphilus european and mediterranean plant. Chestnut gall wasp dryocosmus kuriphilus is considered. After adult emergence, the gall dries, becomes woodlike, and remains attached to the tree for up to 2 years. Pdf dryocosmus kuriphilus has become a major issue for chestnut castanea sativa cultivation since its introduction in europe. At the time of bud burst in spring, the adults emerge to induce the formation of 520 mm diameter green or rose. Pdf assessing the impact of dryocosmus kuriphilus on the. It is native to china and it is known in many other parts of the world, particularly the northern hemisphere, as an introduced species and an invasive horticultural pest. Threat identification and pathway analysis submitted by.

Symptoms top of page galls are unilocular or multilocular, 520 mm in diameter, green or rosecoloured, often containing portions of developing leaves, stems and petioles. Classical biological control against the chestnut gall. Dryocosmus kuriphilus infestation rates in 2009 in southern ticino. They develop on young twigs, on leaf petioles or on the midrib of the leaves.

Cynipidae, is one of the most serious pests attacking chestnut trees. The plantwise knowledge bank brings together plant health information from across the world, including a diagnostic tool, factsheet library, and distribution maps. Biological control of invasive dryocosmus kuriphilus with. The wasp is native to asia, and has been introduced to continental europe. Early instar larvae overwinter inside chestnut buds. The chestnut gall wasp cgw, dryocosmus kuriphilus, an invasive pest native to china, has caused severe yield and economic losses to chestnut production in europe since its arrival in 2002. Biological control of invasive dryocosmus kuriphilus with introduced. Presence and degree of infestation of dryocosmus kuriphilus in switzerland.

It affects castanea including sweet chestnut, causing galling on leaves, twigs and petioles inhibiting leaf function, which can weaken the tree, reducing nut production and making it. We propose to combine laboratory and field experiments to answer. Fusionner pdf combinez des fichiers pdf gratuitement en ligne. Dryocosmus kuriphilus dryckuoverview eppo global database.